Haemonchosis 血矛线虫病 From: 2007 动物医学（ 2 ）班 严常燕 许思宇 陈玲

Haemonchosis introductionmorphologyLife cycleedipemiologysymptomsdiagnosistreatmentprevention

Introduction CATTLE SHEEPCAMEL Site :  Abomasum( 真胃 )  small intestine( 小肠 )  Host:

Morphology  Buccal capsule( 口囊 )  Cervical papillae （颈乳突）  Copulatory bursa （交合伞）  Ray （肋）  Spicule ( 交合刺 )  Barb( 倒钩 )  Gubernaculum （引器）  Vulval flap （阴门盖）

Appearance of male and female The anterior end of adult Genital pore of female Copulatory bursa

Life cycle Egg First stage larva Second stage larva Third stage Adult

Epidemiology life span （寿命） ——one year dormancy （休眠） ——one year  self-cure( 自愈现象 )  the infection rate （感染率） ——high  the infection intensity （感染强度） ——large The third stage larvae resistance is strong Animals of either sex are equally affected Highest incidence (89.55%) in the month of July

Symptoms

Diagnosis  Flotation method ( 饱和 食盐水漂浮法 )  Larval culture （幼虫培 养）  Identification （鉴定） Postmortem diagnosis （死后诊断） → ←

Treatment  Albendazole( 丙硫苯咪 唑 )  Levamisole （左咪唑）  Ivermectin （伊维菌素）  Mebendazole （甲苯咪 唑）

Prevention  Strengthen raising management  Improve livestock their own immunity （免疫）  Not grazing （放牧）, drinking water in the low-lying and wet （低 洼潮湿） land  Preventive deworming （预防性驱 虫） during feeding  Note feed, water clean sanitation （ 卫生设施体系 ）

Thank you!